CN2328811Y

CN2328811Y - Electromagnetic control variable axial plunger pump

Info

Publication number: CN2328811Y
Application number: CN 97227229
Authority: CN
Inventors: 阎学富
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-09-23
Filing date: 1997-09-23
Publication date: 1999-07-14
Anticipated expiration: 2007-09-23

Abstract

The utility model discloses electromagnetic control variable axial plunger pump, including by pump case 1, main shaft 2, sloping cam plate device 3, cylinder body 4, plunger 5, join in marriage oily valve body 40, electromagnet 7 for the valve constitutes, the diameter inequality of each plunger jar chamber 41 on the cylinder body 4 is divided into groups and is set up, be provided with the centrifugal inlet chamber booster pump that vane rotor 100 constitutes in advancing oil chamber T, it has the advantage of variable and quantitative axial plunger pump concurrently, advance the oil extraction row to each plunger jar chamber through the electromagnet and control, realize multistage variable control, variable control is convenient accurate, can remote control, and it is high to have the volume rated pressure, and long service life, anti-oil staining ability is strong, the characteristics that volumetric efficiency is high.

Description

The axial base for post pump of electromagnetic control variable

The utility model relates to hydraulic element, is a kind of axial variable displacement plunger pump as the hydraulic system source that is used for hydraulic system.

Axial variable displacement plunger pump as shown in Figure 1, its structure constitutes mainly by pump case k, main shaft a, oil distribution casing b, cylinder body c, plunger d, promote the swash plate e of plunger d, drive swash plate e and adjust the piston f formation that Variable Control is carried out at the inclination angle, the left end of main shaft a is fixedly connected by key and cylinder body c, main shaft a drives cylinder body c and rotatablely moves, on disc type cylinder body c, offer the identical plunger case chamber of a plurality of diameters, plunger d is contained in each cylinder chamber, the left end of each plunger d remains on the tapered plane that abuts in swash plate e plunger d left end by the platen device, when cylinder body c rotates, plunger d produces axially reciprocating under swash plate e effect, realize suction/oil extraction function, between the right-hand member of cylinder body c and pump case bonnet, oil distribution casing b is set, offer on the oil distribution casing b and join oily fenestra, oil distribution casing b connects cylinder chamber and the suction/oil drain out on the pump housing of each plunger d on the cylinder body c cylinder body c when rotated in turn, joins functional oil thereby finish input and output.The tapered plane of this record swash plate e and axial angle can be adjusted change, and when the tapered plane of swash plate e and axis normal, each plunger d does not have axial motion, discharge capacity is zero, along with swash plate e plane and axial angle increase, the stroke of base for post d increases thereupon, and its discharge capacity also increases.The variation at inclination angle, swash plate e plane is by the mobile drive that is vertically set on pump housing left side piston f then.In the prior art, the mode that Variable Control piston f is moved has multiple, and the manual axial variable displacement plunger pump of SCY14-1B type of Shanghai High-Poessure Oil-Pump Factory production as shown in Figure 1, it is to adjust piston f position by handwheel by leading screw; Also useful hydraulic drive, as YCY14-1B type pressure compensation axial variable displacement plunger pump and the motor-driven axial variable displacement plunger pump of CCY14-1B type, be to cause piston f end, piston f moved carry out rib and push away that it is moved by the hydraulic drive basic f that lives by hydrovalve control by pressure oil with pump output.The advantage of this axial variable displacement base for post record is that rated pressure is higher, its shortcoming is because cylinder body c and oil distribution casing b easily generation wearing and tearing of relative rotation at a high speed so usage range is strong, reduce working life, particularly to by turbidity test require high, form grinding if oil is unclean, easier generation wearing and tearing are directed at leakage and increase, volumetric efficiency descends, until inefficacy.

Quantitative axial piston pump is also arranged in the prior art, it is compared with axial variable displacement plunger pump, be not provided with and drive the piston f device that swash plate e adjusts the inclination angle, the tapered plane inclination angle that is its swash plate e is fixed, directly driving swash plate rotation promotion plunger by transmission shaft moves, and cylinder body does not rotate, ZB1 type high pressure axial plunger pump as the production of Tianjin high pressure oil pump factory, because cylinder body do not rotate, it just must not be provided with yet and cylinder body oil distribution casing in relative rotation, but corresponding each cylinder chamber is respectively arranged with on cylinder body and passes in and out oily one-way valve and finish input and output and join functional oil.This pump is simple in structure relatively, and antipollution requires lowlyer relatively to the turbidity test of oil, so the life-span is longer, but this pump is a kind of quantitative axial piston pump, can not variable, and application area is narrow.

The purpose of this utility model is to improve row at above-mentioned the deficiencies in the prior art, and a kind of pressure height is provided, antipollution, and low to the turbidity test requirement of oil, the life-span is long, controls the multistage axial variable displacement plunger pump of Electromagnetic Control easily.

Technical solution of the present utility model is, include pump case, main shaft, swash plate, cylinder body, cylinder chamber distributing device constitutes, driving swash plate at the housing inner main axis rotates, swash plate and integrated spindle axis or be fixedly connected, the tapered plane of swash plate is fixed with axial angle, cylinder body is fixedly mounted in the housing, circle is provided with a plurality of plunger cases chamber with evenly being distributed in the cylinder body upper edge, plunger is contained in each cylinder chamber, the outer end of each plunger makes the outer end of plunger keep abutting on the tapered plane of swash plate by the platen device, plunger is being made axially reciprocating under the swash plate rotary action in the cylinder chamber, on the cylinder body or with cylinder body be on the oil distributing valve body split setting and that reclining rear end of the cylinder block, the rearward end of each cylinder chamber in this cylinder chamber on the corresponding cylinder body is provided with respectively into, fuel-displaced one-way valve, constitute the distributing device in cylinder chamber, advance, the oil extraction one-way valve respectively with the housing bonnet on the oil-feed and the oil extraction lumen pore that are provided with lead to, finish oil is joined in the input and output in cylinder chamber, the in line check valve in corresponding each cylinder chamber is provided with valve control electromagnet on the rear end cover outside of pump case, the electromagnet armature push rod passes the in line check valve that the housing rear end cover acts on the cylinder chamber, in line check valve is carried out the ejection effect, control this in line check valve and whether work, whether reach this cylinder chamber of control works; For obtaining stable rank variable such as multistage, the plunger case chamber diameter on the cylinder body is not isometrical grouping setting; Abundant for guaranteeing cylinder chamber oil suction, improve the volumetric efficiency of adopting, and improve the working efficiency of pump, be provided with the vane rotor that drives by main shaft in the oil suction chamber between cylinder body or oil distributing valve body rear portion and housing bonnet, constitute the centrifugal booster pump of oil suction chamber.Whether the utility model works by each plunger case of magnet control, thereby finish pump is carried out variable adjustment work, it not only can realize multistage variable, have the big characteristics of axial variable displacement plunger pump usage range, and have quantitatively axially that the oil rub resistance of stake plug pump dyes, the life-span is long, the pressure advantages of higher.

Fig. 1 is the manual axial variable displacement plunger pump structural drawing of prior art SCY14-1B type.

Fig. 2 is the utility model example structure schematic representation.

Fig. 3 is another example structure schematic representation of the utility model.

Fig. 4 is another example structure schematic representation of the utility model.

Fig. 5 is Fig. 2,3 A-A sectional structure schematic representation.

Fig. 6 is its in line check valve Electromagnetic Control Normally closed type structural representation of the utility model.

Fig. 7 is its in line check valve Electromagnetic Control of the utility model structural representation open in usual.

The utility model elaborates during below in conjunction with accompanying drawing embodiment.

Referring to accompanying drawing 2,3, shown in 4, the utility model includes pump case 1, main shaft 2, swash plate 3, cylinder body 4, plunger 5, cylinder chamber distributing device constitutes, in housing 1, main shaft 2 rotates with housing 1 by housing end plug and bearing means and connects installation, swash plate 3 is with main shaft 2 one or be fixedly connected, main shaft 2 drives swash plate 3 and rotates, the tapered plane 31 of swash plate 3 is fixed with axial angle, cylinder body 4 is fixedly mounted in the housing 1, evenly be distributed at cylinder body 4 upper edge circumference and be provided with a plurality of plunger cases chamber 41, plunger 5 is slidingly installed in each cylinder chamber 41, the outer end of each plunger 5 makes plunger 5 outer ends keep abutting on the tapered plane 31 of swash plate 3 by platen device 9, plunger 5 is made axially reciprocating under swash plate 3 rotary actions, on the cylinder body 4 or with cylinder body 4 be the split setting and oil distributing valve body 40 that fixedly reclining cylinder body 4 rear ends on, the rearward end in corresponding each cylinder chamber 41 be provided with respectively in line check valve 6 and oil extraction one-way valve 6 ', advance, oil extraction one-way valve 6,6 ' respectively with housing 1 bonnet 10 on the oil suction chamber T and the oil extraction lumen pore P that offer lead to, finish oil is joined in the input and output in cylinder chamber 41, the in line check valve 6 in corresponding each cylinder chamber is provided with valve control electromagnet 7 on the rear end cover 10 of pump case 1, electromagnet 7 armature lifters 71 pass the in line check valve 6 that rear end cover 10 acts on cylinder chamber 41, in line check valve 6 is carried out the ejection effect, control this in line check valve 6 and whether work, whether reach this cylinder chamber of control works.In line check valve 6 is subjected to the control mode of its electromagnet 7 to have two kinds, a kind of is in line check valve 6 Normally closed types, as shown in Figure 6, when electromagnet 7 does not have electricity, push rod 71 Returnning springs 72 reset push rod 71 promptly to move and lean against right-hand member and leave in line check valve 6, in line check valve 6 is normally closed, in line check valve 6 can free ON/OFF work with the to-and-fro motion of plunger 5, closing function when opening with oil extraction when realizing oil suction, its cylinder chamber is in running order, when electromagnet 7 electric after, electromagnet armature push rod 71 backs down in line check valve 6, and it can not be closed, keep enough opening volume productions and give birth to backflow, (make this cylinder chamber be in unloading condition; Another kind is that in line check valve 6 is open in usual, as shown in Figure 7, when electromagnet 7 does not have electricity, electromagnet armature push rod 71 ' under its spring 72 ' impetus, back down in line check valve 6, this in line check valve 6 is often opened, the cylinder chamber be in unloading condition, when electromagnet 7 when electric, electromagnet retracts armature lifter 71 and leaves in line check valve 6, oiling valve 6 normal ON/OFF work, make the cylinder chamber in running order, the work in each base for post cylinder chamber and unloading condition are controlled and are realized multistage variable during by each electromagnet 7.Control mode open in usual mainly is applicable to pump when work, and it is in unloading time and imitates long applying working condition application.

Shown in accompanying drawing 5, the diameter in each the plunger case chamber 41 on the utility model cylinder body 4 is that not isometrical grouping is provided with, be divided at least two groups by diameter, every group at least two, preferably be divided into the 3-4 group, every group 3 to 5, the cylinder chamber 41a of size diameter, 41b, 41c, 41d evenly are spaced distribution, and its advantage is can obtain rank variablees such as multistage stably through control combination.

Shown in accompanying drawing 2,3,4, the utility model forms in cylinder body 4 or oil distributing valve body 40 rear portions and 10 structures of housing bonnet and offers oil suction chamber T, in this oil suction chamber T, be provided with connect the outrigger shaft 2 that is installed on the main shaft 2 or is fixedly connected with main shaft 2 ' on the centrifugal oil suction chamber suction booster that constitutes of blade rotor 100.Blade rotor 100 shown on the accompanying drawing is to be made of a disc rotor, directly upwards offer a plurality of radial holes 101 at it and constitute centrifugal blade, after entering in the beam barrel of low pressure oil T ' by disc rotor 100, throw away, make oil suction chamber T produce certain charge oil pressure through radial hole 101.So can fully satisfy each cylinder chamber 41 speed of oil absorption demand because the charge oil pressure of oil suction chamber T improves, guarantee that oil suction is abundant, therefore can improve the volumetric efficiency of each plunger pump.

The utility model embodiment (as shown in Figure 2), it is by pump case 1, main shaft 2, swash plate 3, cylinder body 4, plunger 5, oil distributing valve body 40, valve control electromagnet 7 constitutes, in housing 1, main shaft 2 is by

radial bearing

23,25, thrust-bearing 24, end cap 22 and the Sealing 21 that is arranged in the end cap 22 connect installation with housing 1 rotary seal, swash plate 3 is fixedly connected with main shaft 2 one, cylinder body 4 is fixedly mounted in the housing 1, evenly be distributed at cylinder body 4 upper edge circumference and be provided with a plurality of plunger cases chamber 41, plunger 5 is slidingly installed in each cylinder chamber 41, the outer end of each plunger 5 makes base for post 5 outer ends keep abutting on the tapered plane 31 of swash plate 3 by platen device 9a, platen device 9a is by piston shoes 51, platen 54, telescopic bulb push rod 55, push rod pressure spring 56 constitutes, the outer end of each plunger 5 and piston shoes 51 are rotatably assorted by bulb and are linked together, telescopic bulb push rod 55 is slidingly installed in cylinder body 4 center holes and is subjected to the thrust of spring 56, platen 54 is pressed and is put on each piston shoes 51, the front end of telescopic bulb push rod 55 cooperates with platen 54 spheres, and under spring 56 effect ejection platen 54, making piston shoes 51 keep abutting on the tapered plane 31 of swash plate 3 slides, by piston shoes 51 outer end of each plunger 5 and the tapered plane 31 of swash plate 3 are slidingly matched, promote plunger 5 to-and-fro motion, fixedly install oil distributing valve body 40 in cylinder body 4 rear ends, cylinder body 4 is pressed abd fixed in the housing 1 by pump case rear end cover 10 with oil distributing valve body 40, on rear end cover 10, offer oil inlet hole T ', oil suction chamber T and oil drainage hole P, on oil distributing valve body 40 corresponding each cylinder chamber 41 rearward end be provided with respectively in line check valve 6 and oil extraction one-way valve 6 ', advance, oil extraction one-way valve 6,6 ' respectively lead to the oil suction chamber T of 10 of oil distributing valve body 40 and pump case rear end covers and the oil extraction lumen pore P on the housing rear end cover 10, oil is joined in the input and output in cylinder chamber 41 when finishing, the in line check valve 6 in corresponding each cylinder chamber 41 is provided with valve control electromagnet 7 on the rear end cover 10 of pump case, the armature lifter 71 of electromagnet 7 passes housing rear end cover 10, its front end acts on the in line check valve 6 in cylinder chamber 41, in line check valve 6 is carried out the ejection effect, control this in line check valve 6 and whether work, reach this oil cylinder of control and whether work; Evenly be distributed on cylinder body 4 and be provided with the cylinder chamber that four groups of diameters do not wait, three every group, the cylinder chamber 41a of size diameter, 41b, 41c, 41d evenly are spaced distribution; In the oil suction chamber T of 10 of oil distributing valve body 40 rear portions and housing rear end covers, be provided with the centrifugal oil suction chamber suction booster that the blade rotor 100 by transmission shaft 2 ' drive constitutes, transmission shaft 2 ' place in the telescopic bulb push rod 55 and to be rotatably assorted with telescopic bulb push rod 55 gaps, transmission shaft 2 ' left end be fixedly connected with axis hole 26 (i.e. the connection axis hole of offering at the swash plate center 26) the grafting key that connects that center, main shaft 2 right part is offered, transmission shaft 2 ' right-hand member rotate by the axis hole of offering in the heart in radial bearing 27 and the oil distributing valve body 40 and connect, its axle sleeve of disc rotor 100 usefulness 102 and transmission shaft 2 ' right axle head be fixedly connected by key and tightening nut, disc rotor 100 is rotatably installed in the oil suction chamber T under transmission shaft 2 ' drive, form the oil suction chamber suction booster, after entering in the right-hand member sleeve 103 of low pressure oil by disc rotor 100, throw away oil suction chamber T outer portion through radial hole 101, make oil suction chamber T produce certain charge oil pressure.This example structure is because the platen device 9a of its plunger 5 is made of slipping-shoe device, and its Transmission bearing is strong, is particularly useful for high-power pump.

Another embodiment of the utility model (as shown in Figure 3), by pump case 1, main shaft 2, swash plate 3, cylinder body 4, plunger 5, oil distributing valve body 40, valve control electromagnet 7 constitutes, in housing 1, the left end of main shaft 2 by radial bearing 23 ', end cap 22 ' and be arranged on the Sealing 21 of end cap 22 ' interior ' connect installation with housing 1 rotary seal, the right-hand member of main shaft 2 is installed by radial thrust bearing 27 ' rotation with the axis hole that cylinder body 4 centers that are fixedly mounted in the housing 1 are offered, swash plate 3 and main shaft 2 cooperate by key and are fixedly connected, the left end of swash plate 3 and housing front cover 22 ' be provided with thrust-bearing 24 ' supporting, evenly be distributed at cylinder body 4 upper edge circumference and be provided with a plurality of base for post cylinders chamber 41, plunger 5 is slidingly installed in each cylinder chamber 41, the outer end of each plunger 5 cooperates with the tapered plane 31 of swash plate 3 by platen device 9b, under swash plate 3 rotary actions, make axially reciprocating, platen device 9b is by plain thrust bearing 93, centripetal thrust force vicarious 97, balance 94, two ball head connecting rods 98 constitute, plain thrust bearing 93 is installed on tapered plane 31 end faces of swash plate 3, balance 94 is installed on swash plate 3 bodies by centripetal thrust force vicarious 97, and be bearing in by plain thrust bearing 93 on the inclined-plane of swash plate 3, the two ends of two ball head connecting rods 98 cooperate connection with balance 94 and plunger 5 outer end spherical rotation respectively, promptly an end of two ball head connecting rods 98 cooperates connection by ball seat 95 and the sphere gland 96 that is provided with on the balance 94 with balance 94 spherical rotation, the outer end ball-and-socket of the other end of two ball head connecting rods 98 and plunger 5 cooperates the lower peripheral surface connection that is rotatably assorted at gland 92, the outer end of each plunger 5 is connected with balance 94 by its pair ball head connecting rod 98, be fixedly connected at the edge of balance 94 and balance 94 and be provided with the locating stud 91 that restriction balance 94 rotates, on this locating stud 91, can be provided with the sliding sleeve piece 90 that is rotatably assorted with it, to should on pump case 1, offering the chute 14 that cooperates with slide block 90 by locating stud 91 slide blocks 90, locating stud 91 slide blocks 90 rotate with chute 14 engagement limits balances 94, swash plate 3 rotates under main shaft 2 drives, balance 94 is only swung by plain thrust bearing 93 supportings and locating stud 91 effects, and by 5 to-and-fro motion of two ball head connecting rods 98 drive plungers, fixedly install oil distributing valve body 40 in cylinder body 4 rear ends, cylinder body 4 is fixed in the housing 1 by pump case rear end cover 10 with oil distributing valve body 40, on rear end cover 10, offer oil inlet hole T ', oil suction chamber T and oil drainage hole P, on oil distributing valve body 40 corresponding each cylinder chamber 41 rearward end be provided with respectively in line check valve 6 and oil extraction one-way valve 6 ', advance, oil extraction one-way valve 6,6 ' respectively with housing rear end cover 10 on oil-feed lumen pore T and oil extraction lumen pore P lead to, finish oil is joined in the input and output in cylinder chamber 41, the in line check valve 6 in corresponding each cylinder chamber 41 is provided with valve control electromagnet 7 on the rear end cover 10 of pump case, the armature lifter 71 of electromagnet 7 passes housing rear end cover 10, its front end acts on the in line check valve 6 in cylinder chamber 41, in line check valve 6 is carried out the ejection effect, control this in line check valve 6 and whether work, reach this oil pocket of control and whether work; Evenly be distributed to be provided with to organize the cylinder chambeies 41 that diameters do not wait at cylinder body 4 upper edge circumference, the cylinder chamber 41 of size diameter evenly is spaced distribution more; In the oil suction chamber T of 10 of oil distributing valve body 40 rear portions and housing rear end covers, be provided with the centrifugal oil suction chamber suction booster that constitutes by blade rotor 100, its left end axle sleeve 102 of disc rotor 100 usefulness is fixedly connected by key and tightening nut with the right axle head of main shaft 2, and rotor 100 is rotatably installed in the oil suction chamber T under main shaft 2 drives.The difference of this example structure and aforementioned figures 2 illustrated embodiments is that main shaft 2 is different with the transmission joint structure of plunger 5 with the connecting structure and the swash plate 3 of the pump housing, and other structure is identical.The characteristics of this example structure are that to change sliding friction be rolling friction, and the suffered radial force of plunger 5 is very little, and the transmission system long service life is specially adapted to the mid power pump and uses.

Another embodiment of the utility model (as shown in Figure 4), by pump case 1, main shaft 2, swash plate 3, cylinder body 4, plunger 5, valve control electromagnet 7 constitutes, in housing 1, main shaft 2 is by the radial bearing 23 on housing 1 two end cap "; 27 " connect installation with housing 1 rotation, swash plate 3 and main shaft 2 one, the left part of swash plate 3 and housing front cover 22 " between be provided with thrust and take out and hold 24 ' supporting; the tapered plane 31 of swash plate 3 be provided with plain thrust bearing 93 '; cylinder body 4 is fixedly mounted in the housing 1; cylinder body 4 upper edge circumference evenly be distributed be provided with a plurality of band cylinder sleeves 41 ' plunger case chamber 41; plunger 5 is slidingly installed in each cylinder chamber 41; outer end of each plunger 5 is a bulb-type, on cylinder body 4 outside column stopper rods 5, be equipped with spring 56 ', spring 56 ' promotion plunger 5 outer ends keep pressing to plain thrust bearing 93 on swash plate 3 tapered planes 31 ', plain thrust bearing 93 ' and plunger rod 5 on the platen device of spring 56 ' formation plunger 5, plunger 5 is made axially reciprocating under swash plate 3 rotary actions, in 41 rear ends, cylinder body 4 upper cylinder half chambeies, the time should each cylinder chamber 41 offer in line check valve 6 in the axial direction, offer diametrically oil extraction one-way valve 6 ', on cylinder body 4 outer shrouds, be fixed with sealing and be provided with ring set 45 with cylinder body 4, on ring set 45, offer annular row oilhole P, each draining valve 6 on oil drainage hole P and the cylinder body 4 ' communicate, cylinder body 4 and ring set 45 and pump case 1 are fixedly connected by screw in compression by benefit after the pump case 10, on pump case bonnet 10, be fixedly connected rear end cover 10 ', rear end cover 10 ' on offer oil inlet hole T ', the oil-feed lumen pore T of 10 formations of in line check valve 6 and cylinder body 4 and housing bonnet communicates, the rear end cover 10 of pump case ' on the in line check valve 6 in corresponding each cylinder chamber 41 be provided with valve control electromagnet device 7, the armature lifter 71 of electromagnet 7 passes housing rear end cover 10 ' and bonnet 10, its front end acts on the in line check valve 6 in cylinder chamber 41, the time in line check valve 6 carry out the ejection effect, control this in line check valve 6 and whether work, reach this oil cylinder of control and whether work; Evenly be distributed on cylinder body 4 and be provided with the cylinder chamber 41 that many group diameters do not wait, the cylinder chamber 41 of size diameter evenly is spaced distribution; In the oil suction chamber T of 10 of cylinder body 4 rear portions and housing bonnets, be provided with the centrifugal oil suction chamber suction booster that constitutes by blade rotor 100, disc rotor 100 is fixedly connected with main shaft 2, rotor 100 is rotatably installed in the oil suction chamber T under main shaft 2 drives, the right-hand member of main shaft 2 offers hollow hole 200, the right-hand member that is main shaft 2 is hollow, radial hole 101 on the main shaft on the 2 corresponding circle disc rotors 100 offers radial direction through hole 201, low pressure oil by housing rear end cover 10 ' oil inlet hole T ' enter in the main shaft 2 right-hand member hollow holes 200, radial hole 201 on main shaft 2 enters in the disc rotor 100, throw away oil suction chamber T through rotor radial hole 101, make oil suction chamber T produce certain charge oil pressure.The characteristics of this example structure are simple in structure, and volume is little, produce easyly, are specially adapted to the small-power pump and use.

The utility model is according to the difference of cylinder chamber 41 diameter, the advancing of its cylinder chamber, oil extraction one-way valve 6,6 ' can adopt cone shaped one-way valve, or plate shaped one-way valve, or ball valve.

The utility model has overcome the deficiencies in the prior art, has the advantage of variable and quantitative axial plunger pump concurrently, by electricity Magnet is controlled the oil extraction of advancing in each plunger case chamber, realizes axial plunger pump is carried out multi-stage variable control, variable control System is convenient accurately, and the precision height can far distance controlled and appliance computer control, and have the rated pressure height, can By the property height, the life-span is long, and oil rub resistance dyes the strong characteristics of ability, and owing to be provided with the oil suction chamber booster pump, can improve pump and exist Oil absorption when running up further improves volumetric efficiency and the operating efficiency of pump.

Claims

1, the electromagnetic control variable axial piston pump, include pump case (1), main shaft (2), swash plate (3), cylinder body (4), plunger (6), cylinder chamber distributing device constitutes, it is characterized in that, in housing (1), main shaft (2) rotates with housing (1) by housing end plug and bearing means and connects installation, swash plate (3) and main shaft (2) one or be fixedly connected, main shaft (2) drives swash plate 3 and rotates, cylinder body (4) is fixedly mounted in the housing (1), evenly be distributed at cylinder body (4) upper edge circumference and be provided with a plurality of base for post cylinders chambeies (4), base for post (5) is slidingly installed in each cylinder chamber (41), the outer end of each base for post (5) is made axially reciprocating by tapered plane (31) upper plug (5) that platen device (9) makes plunger (5) outer end keep abutting in swash plate (3) under swash plate (3) rotary action, cylinder body (4) go up or be the split setting with cylinder body (4) and oil distributing valve body (40) that fixedly reclining cylinder body (4) rear end on the rearward end in corresponding each cylinder chamber (41) be provided with in line check valve (6) and oil extraction one-way valve (6 ') respectively, advance, oil extraction one-way valve (6,6 ') respectively with housing (1) bonnet (10) on oil-feed lumen pore (T) and the oil extraction lumen pore (P) offered lead to, finish oil is joined in the input and output of cylinder chamber (41), the in line check valve (6) of going up corresponding each cylinder chamber at the rear end cover (10) of pump case (1) is provided with valve control electromagnet (7), electromagnet (7) armature lifter (71) passes the in line check valve (6) that rear end cover (10) acts on cylinder chamber (41), in line check valve (6) is carried out the ejection effect, whether control this in line check valve (6) and work, in line check valve (6) is subjected to the control of its electromagnet (7) to be in normally closed or often opens.

2, electromagnetic control variable axial piston pump according to claim 1, it is characterized in that, the diameter in each the plunger case chamber (41) on the cylinder body (4) is that not isometrical grouping is provided with, be divided at least two groups by diameter, every group at least two, preferably be divided into the 3-4 group, 3 to 5 every group, the cylinder chamber of size diameter evenly is spaced distribution.

3, electromagnetic control variable axial piston pump according to claim 1, it is characterized in that, structure forms and to be provided with oil suction chamber (T) between cylinder body (4) or oil distributing valve body (40) rear portion and housing bonnet (10), is provided with to connect the centrifugal oil suction chamber suction booster that the blade rotor (100) on the outrigger shaft (2 ') that is installed in that main shaft (2) is gone up or is fixedly connected with main shaft (2) constitutes in this oil suction chamber (T).

4, electromagnetic control variable axial piston pump according to claim 2, it is characterized in that, structure forms and to be provided with oil suction chamber (T) between cylinder body (4) or oil distributing valve body (40) rear portion and housing bonnet (10), is provided with to connect the centrifugal oil suction chamber suction booster that the blade rotor (100) on the outrigger shaft (2 ') that is installed in that main shaft (2) is gone up or is fixedly connected with main shaft (2) constitutes in this oil suction chamber (T).

5, according to claim 1 or 2 or 3 described electromagnetic control variable axial piston pumps, it is characterized in that, in housing (1), main shaft (2) is by radial bearing (23,25), thrust-bearing (24), end cap (22) and the Sealing (21) that is arranged in the end cap (22) connect installation with housing (1) rotary seal, swash plate (3) is fixedly connected with main shaft (2) one, the outer end of each plunger (5) makes base for post (5) outer end keep abutting on the tapered plane (31) of swash plate (3) by platen device (9a), platen device (9a) is by piston shoes (51), platen (54), telescopic bulb push rod (55), push rod pressure spring (56) constitutes, outer end of each plunger (5) and piston shoes (51) are rotatably assorted by bulb and are linked together, telescopic bulb push rod (55) is slidingly installed in cylinder body (4) center hole and is subjected to the thrust of spring (56), platen (54) is pressed and is put on each piston shoes (51), the front end of telescopic bulb push rod (55) cooperates with platen (54) sphere, and under spring (56) effect ejection platen (54), the tapered plane (31) that makes piston shoes (51) keep abutting in swash plate (3) is gone up slip, by piston shoes (51) outer end of each plunger (5) and the tapered plane (31) of swash plate (3) are slidingly matched, promote plunger (5) to-and-fro motion, fixedly install oil distributing valve body (40) in cylinder body (4) rear end, cylinder body (4) is pressed abd fixed in the housing (1) by pump case rear end cover (10) with oil distributing valve body (40), on rear end cover (10), offer oil inlet hole (T '), oil suction chamber (T) and oil drainage hole (P), go up at oil distributing valve body (40) that corresponding each cylinder chamber (41) rearward end is provided with in line check valve (6) respectively and oil extraction one-way valve (6 ') advances, oil extraction one-way valve (6,6 ') lead to oil suction chamber (T) between oil distributing valve body (40) and pump case rear end cover (10) and the oil extraction lumen pore (P) on the housing rear end cover (10) respectively, the in line check valve (6) of going up corresponding each cylinder chamber at the rear end cover (10) of pump case (1) is provided with valve control electromagnet (7), electromagnet (7) armature lifter (71) passes the in line check valve (6) that rear end cover (10) acts on cylinder chamber (41), the time in line check valve (6) carry out the ejection effect, control this in line check valve (6) and whether work; Be provided with the centrifugal oil suction chamber suction booster of blade rotor (100) formation that drives by transmission shaft (2 ') in the oil suction chamber (T) between oil distributing valve body (40) rear portion and housing rear end cover (10), transmission shaft (2 ') places in the telescopic bulb push rod (55) and with telescopic bulb push rod (55) gap and is rotatably assorted, the left end of transmission shaft (2 ') is fixedly connected with axis hole (26) the grafting key that connects that main shaft (2) center, right part is offered, the right-hand member of transmission shaft (2 ') rotates by the axis hole of offering in the heart in radial bearing (27) and the oil distributing valve body (40) and connects, rotor (100) is to be made of a disc rotor with the right axle head of its axle sleeve (102) and transmission shaft (2 ') by key and the tightening nut rotor (100) that is fixedly connected, directly upwards offer a plurality of radial holes (101) at it and constitute centrifugal blade, after entering in the beam barrel of low pressure oil (T ') by disc rotor (100), throw away through radial hole (101), make oil suction chamber (T) produce certain charge oil pressure.

6, according to claim 1 or 2 or 3 described electromagnetic control variable axial piston pumps, it is characterized in that, in housing (1), the left end of main shaft 2 is by radial bearing (23 '), end cap (22 ') and the Sealing (21 ') that is arranged in the end cap (22 ') connect installation with housing (1) rotary seal, the right-hand member of main shaft (2) rotates installation with the axis hole that cylinder body (4) center that is fixedly mounted in the housing (1) is offered by radial thrust bearing (27 '), swash plate (3) cooperates by key with main shaft (2) and is fixedly connected, be provided with thrust-bearing (24 ') supporting between the left end of swash plate (3) and housing front cover (22 '), the outer end of each plunger (5) cooperates with the tapered plane (31) of swash plate (3) by platen device (9b), platen device (9b) is by plain thrust bearing (93), centripetal thrust force vicarious (97), balance (94), two ball head connecting rods (98) constitute, plain thrust bearing (93) is installed on tapered plane (31) end face of swash plate (3), balance (94) is installed on swash plate (3) body by centripetal thrust force vicarious (97), and be bearing on the inclined-plane of swash plate (3) by plain thrust bearing (93), the two ends of two ball head connecting rods (98) cooperate connection with balance (94) and plunger (5) outer end spherical rotation respectively, promptly an end of two ball head connecting rods (98) cooperates connection by ball seat (95) and the sphere gland (96) that balance (94) upward is provided with balance (94) spherical rotation, the outer end ball-and-socket of the other end of two ball head connecting rods (98) and plunger (5) cooperates the lower peripheral surface connection that is rotatably assorted at gland (92), the outer end of each plunger (5) is connected with balance (94) by its pair ball head connecting rod (98), be fixedly connected at the edge of balance (94) and balance (94) and be provided with the locating stud (91) that restriction balance (94) rotates, on this locating stud (91), can be provided with the slide block (90) that is rotatably assorted with it, to should on pump case (1), offering the chute (14) that cooperates with locating stud slide block (90) by locating stud slide block (90), slide block (90) rotates with chute (14) engagement limits balance (94), swash plate (3) rotates under main shaft (2) drives, balance (94) is only swung by plain thrust bearing (93) supporting and locating stud (91) effect, and by the to-and-fro motion of two ball head connecting rods (98) drive plunger (3), fixedly install oil distributing valve body (40) in cylinder body (4) rear end, cylinder body (4) is fixed in the housing (1) by pump case rear end cover (10) with oil distributing valve body (40), on rear end cover (10), offer oil inlet hole (T '), oil suction chamber (T) and oil drainage hole (P), go up corresponding each cylinder chamber (41) rearward end at oil distributing valve body (40) and be provided with in line check valve (6) and oil extraction one-way valve (6 ') respectively, advance, oil extraction one-way valve (6,6 ') respectively with oil distributing valve body (40) and pump case rear end cover (10) between oil suction chamber (T) and the oil extraction lumen pore (P) on the housing rear end cover (10) lead to the in line check valve (6) of going up corresponding each cylinder chamber at the rear end cover (10) of pump case (1) and be provided with valve control electromagnet (7), electromagnet (7) armature lifter (71) passes the in line check valve (6) that rear end cover (10) acts on cylinder chamber (41), the time in line check valve (6) carry out the ejection effect, control this in line check valve (6) and whether work; Be provided with the centrifugal oil-feed control suction booster that is made of blade rotor (100) in the oil suction chamber (T) between oil distributing valve body (40) rear portion and housing rear end cover (10), disc rotor (100) is fixedly connected by key and tightening nut with the right axle head of its left end axle sleeve (102) with main shaft (2).

7, according to claim 1 or 2 or 3 described electromagnetic control variable axial piston pumps, it is characterized in that, in housing (1), main shaft (2) by the radial bearing on housing (1) two end cap (23 "; 27 ") connect installation with housing (1) rotation, swash plate (3) and main shaft (2) one, the left part of swash plate (3) and housing front cover (are provided with thrust-bearing (24 ') supporting; the tapered plane (31) of swash plate (3) is provided with plain thrust bearing (93 '); cylinder body (4) is fixedly mounted in the housing (1); circumference evenly is distributed the plunger case chamber (41) that is provided with a plurality of band cylinder sleeves (41 ') in cylinder body (4) upper edge; plunger (5) is slidingly installed in each cylinder chamber (41); the outer end of each plunger (5) is a bulb-type between 22 "), spring (56 ') is installed on cylinder body (4) outside column stopper rod (5), spring (56 ') promotion base for post (5) outer end keeps pressing to the plain thrust bearing (93 ') on swash plate (3) tapered plane (31), plunger (5) is made axially reciprocating under swash plate (3) rotary action, in rear end, cylinder body (4) upper cylinder half chamber (41), corresponding each cylinder chamber (41) offers in line check valve (6) in the axial direction, offering oil extraction one-way valve (6 ') diametrically is fixed with sealing with cylinder body (4) on cylinder body (4) outer shroud and is provided with ring set (45), on ring set (45), offer annular row oilhole (P), oil drainage hole (P) communicates with each draining valve (6 ') on the cylinder body (4), cylinder body (4) and ring set (45) are fixedly connected by screw in compression by pump case bonnet (10) with pump case (1), rear end cover (10 ') has been fixedly connected on pump case bonnet (10), on rear end cover (10 '), offer oil inlet hole (T '), the oil-feed lumen pore (T) that constitutes between in line check valve (6) and cylinder body (4) and housing bonnet (10) communicates, the in line check valve (6) of going up corresponding each cylinder chamber (41) at the rear end cover (10 ') of pump case is provided with valve control electromagnet device (7), the armature lifter (71) of electromagnet (7) passes housing rear end cover (10 ') and bonnet (10), its front end acts on the in line check valve (6) of cylinder chamber (41), in line check valve (6) is carried out the ejection effect, control this in line check valve (6) and whether work; Be provided with the centrifugal oil suction chamber suction booster that constitutes by blade rotor (100) in the oil suction chamber (T) behind cylinder body (4) rear portion and housing between benefit (10), disc rotor (100) is fixedly connected with main shaft (2), rotor (100) is rotatably installed in the oil suction chamber (T) under main shaft (2) drives, the right-hand member of main shaft (2) offers hollow hole (200), the right-hand member that is main shaft (2) is hollow, radial hole (101) on the main shaft on (2) corresponding circle disc rotor (100) offers radial direction through hole (201), low pressure oil is advanced in main shaft (2) the right-hand member hollow hole (200) by the oil inlet hole (T ') of housing rear end cover (10 '), radial hole on main shaft 2 (201) enters in the disc rotor (100), throw away through rotor radial hole (101), make oil suction chamber (T) produce certain charge oil pressure.